Filter structure for treating paint mist
By employing a baffle stacking design and an inertial separation principle, the problem of complex assembly and high transportation costs of existing paint mist filter modules is solved, achieving efficient filtration and low-cost paint mist treatment, and supporting automated assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AUTOMOTIVE ENGINEERING CORPORATION
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing paint mist filtration modules have complex structures, require manpower for assembly, and have high transportation costs, making it difficult to achieve unmanned and intelligent operation.
The design employs a stacked baffle plate design and utilizes the principle of inertial separation. Through the layout of the air inlet and outlet, combined with the design of W-shaped baffle plates and filter layers, the airflow can flow straight through multiple baffle plates, intercepting coarse particles and reducing the particle escape rate.
It simplifies the assembly process, reduces labor and transportation costs, improves filtration efficiency, reduces system energy consumption, extends service life, and supports automated and unmanned assembly.
Smart Images
Figure CN224506629U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial coating technology, and in particular to a filter structure for treating paint mist. Background Technology
[0002] In the automotive painting industry, painting is a crucial process. During spraying, atomizers or spray guns are used to atomize the paint before application. Some paint mist particles adhere to the target workpiece, while the remaining overspray is guided to a paint mist treatment system. Currently, widely used dry paint mist treatment systems primarily employ paint mist separation modules to separate overspray from the airflow. These modules are typically made of folded cardboard, using a crisscross arrangement of cardboard to form a support structure and provide gas flow channels. Alternatively, porous materials such as honeycomb paper or filter cotton can be fixed within the module using folded and interlocked cardboard. The paint mist is filtered and separated through collisions and adsorption between the paint mist particles in the airflow and the internal structure of the filter module.
[0003] The utility model patent (CN221999269U) discloses a honeycomb cotton paper box filter, which is characterized by an inner end installed inside the opening of the outer frame cardboard. The inner end is connected by multiple connecting plates. A longitudinal cardboard is installed between the connecting plates. A transverse cardboard is installed on the longitudinal cardboard and passes through the honeycomb plate. Filter cotton is wrapped inside the connecting plates. The honeycomb plate and filter cotton are fixed by the cross arrangement of the transverse and longitudinal cardboard.
[0004] Utility model patent (CN222056781U) discloses a labyrinth-type paint mist filtering device. Its structural features include a box body with a chamber inside. A filtering structure is disposed in the chamber, and the filtering structure has at least two labyrinth-shaped filtering channels. The filtering channels are composed of a frame with filter holes and a partition. There is a closed area between two adjacent filtering channels that is connected to the filtering channels. The filter element is inserted into the closed area to filter paint mist.
[0005] Existing paint mist filter modules have complex internal structures and numerous components, requiring significant manual labor for assembly. The assembly process is cumbersome and difficult to automate or automate. During finished product transportation, the numerous gas flow channels within the filter module waste considerable transport space and increase costs. If the filter module is transported as a separate unit, the owner must invest heavily in on-site assembly. For example, the technical solutions disclosed in the aforementioned utility model patents CN221999269U and CN222056781U involve manually folding the cardboard filter element, which is inefficient, complex to assemble, and results in high labor and transportation costs.
[0006] The purpose of this utility model is to address the technical deficiencies in the existing technology by providing a paint mist filter structure and its assembly method that is simple in structure, easy to assemble, and saves transportation space. Utility Model Content
[0007] The purpose of this invention is to provide a filter structure for treating paint mist, thereby solving the problem of complex and labor-intensive assembly of filter structures in related technologies.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A filter structure for treating spray paint mist includes a housing and a filter structure, the filter structure being inside the housing, the housing having an air inlet and an air outlet; the filter structure is composed of stacked baffles.
[0010] Further configuration: one side of the housing is the air inlet, and the other side of the housing opposite the air inlet is the air outlet.
[0011] Further settings include: the baffle is W-shaped.
[0012] Further configuration: the baffle plate consists of a protrusion, a recess, and a connecting surface, at least one of the protrusion and the recess is planar, and ventilation holes are provided on the connecting surface.
[0013] Further configuration: The size of the ventilation holes on the connecting surface decreases sequentially from the air inlet to the air outlet.
[0014] Further configuration: A filter layer is arranged on the baffle plate closest to the air outlet in the filter structure to form a baffle plate with an attached filter layer.
[0015] Further configuration: The filter material on the filter layer is arranged in a filtration grade from coarse to fine along the airflow direction.
[0016] Further configuration: The filter layer is a filter layer composed of one or any combination of honeycomb paper, filter cotton, wire mesh, sintered mesh or perforated plate.
[0017] Further configuration: The baffle is a baffle made of cardboard or steel plate.
[0018] Further configuration: The baffle is a baffle made by pulp molding or injection molding.
[0019] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0020] By using a stacked baffle design and the principle of inertial separation, along with the relative arrangement of the air inlet and outlet, the airflow is ensured to flow straight through multiple baffles. This forces coarse particles (≥10μm) to impact the baffles due to inertia, effectively intercepting dust, droplets, and other impurities. The baffle design with at least two layers further reduces the particle escape rate and ensures coarse filtration efficiency.
[0021] With outstanding structural stability, the baffle plate's support strength can resist airflow impact and particle adhesion load, avoiding deformation and misalignment, maintaining stable flow channel dimensions, extending service life, and ensuring long-term reliable filtration performance.
[0022] The cost control advantages are obvious. The standardized baffles simplify the production process, facilitate mass production, and reduce mold and debugging costs. There is no need to distinguish between specifications during assembly, which shortens the assembly time. Spare parts are interchangeable during maintenance, reducing replacement costs. At the same time, the regularly arranged baffles form a uniform flow channel, which, together with the straight layout of the shell, reduces airflow vortices and resistance, thereby reducing system energy consumption. Attached Figure Description
[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0024] Figure 1 This diagram shows the overall structure of the paint mist filtration structure of this utility model.
[0025] Figure 2 A detailed schematic diagram of the baffles in the filter structure is shown;
[0026] Figure 3 A schematic diagram of a baffle plate with an attached filter layer is shown;
[0027] Figure 4 This diagram illustrates the gas flow principle of the paint mist filtration structure of this invention.
[0028] Figure 5 A schematic diagram of the stacking of baffles during transportation is shown;
[0029] Figure 6 A schematic diagram of the stacking of baffles with attached filter layers during transportation is shown.
[0030] Figure 7 A schematic diagram of the assembly method of the paint mist filter structure of this utility model is shown.
[0031] Reference numerals: 1. Shell; 2. Filter structure; 3. Air inlet; 4. Air outlet; 5. Baffle plate; 6. Protrusion; 7. Recess; 8. Connecting surface; 9. Ventilation hole; 10. Support structure; 11. Cavity; 12. Filter layer; 13. Baffle plate with attached filter layer; 14. First layer baffle plate stacking rack; 15. Second layer baffle plate stacking rack; 16. Nth layer baffle plate stacking rack. Detailed Implementation
[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example
[0035] Reference Figures 1-2 This utility model discloses a filter structure for treating spray paint mist. The utility model includes: a housing 1 and a filter structure 2, the filter structure 2 being inside the housing 1. The housing 1 has an air inlet 3 and an air outlet 4. The filter structure 2 is formed by stacked baffles 5. One side of the housing 1 is the air inlet 3, and the other side of the housing 1 opposite to the air inlet 3 is the air outlet 4.
[0036] Specifically, the baffles 5 have at least two layers. Each layer of baffles 5 in the filter structure 2 uses the same specifications and dimensions, which simplifies the structure and saves assembly time and manufacturing costs to the greatest extent while meeting functional requirements. The baffles 5 must have a certain supporting strength. The supporting strength of the baffles 5 ensures the long-term stability of the structure: it can resist airflow impact, prevent the baffles 5 from deforming or misaligning, and maintain the stability of the channel dimensions; it can withstand the static load of long-term particle adhesion, prevent the plate from bending or breaking, extend the service life of the filter structure 2, and reduce performance degradation caused by structural failure. The multiple turning channels formed by the stacked baffles 5 utilize the principle of inertial separation to effectively intercept larger paint mist and particulate matter in the airflow: when the airflow passes through the baffles 5, it is forced to turn repeatedly, and the particles collide with the plate due to inertia and adhere to it, achieving gas-solid separation. The design of at least two layers of baffles 5 enhances the separation effect by increasing the number of airflow turnings.
[0037] Further configuration: the baffle 5 is W-shaped. The baffle 5 consists of a protrusion 6, a recess 7, and a connecting surface 8. At least one of the protrusion 6 and the recess 7 is planar, and a ventilation hole 9 is provided on the connecting surface 8.
[0038] Specifically, the ventilation holes 9 are used to allow airflow. The size and number of the protrusions 6, recesses 7, connecting surfaces 8, and ventilation holes 9 can be optimized and adjusted according to the actual filtration effect. The protrusions 6 of the lower baffle 5 of the filter structure 2 are stacked in contact with the recesses 7 of the upper baffle 5 to form a support structure 10. The recesses 7 of the lower baffle 5 are aligned and stacked with the protrusions 6 of the upper baffle 5 to form a cavity 11. Multiple W-shaped baffles 5 are stacked sequentially to form multiple continuously arranged cavities 11. The continuously arranged cavities 11 with ventilation holes 9 on the connecting surfaces 8 of the protrusions 6 and recesses 7 of each baffle 5 are connected to form a baffle duct. This filter structure 2 has few components and a simple structure.
[0039] Further configuration: the size of the ventilation holes 9 on the connecting surface 8 decreases sequentially from the air inlet 3 to the air outlet 4.
[0040] Specifically, this arrangement can provide lower wind resistance, higher filtration efficiency and paint capacity, but it will also increase the variety of baffle plate 5 specifications and increase manufacturing costs.
[0041] Reference Figure 3 In the filter structure 2, a filter layer 12 is arranged on the baffle 5 closest to the air outlet 4, forming an attached filter layer baffle 13. The filter materials on the filter layer 12 are arranged in a filtration grade from coarse to fine along the airflow direction. The filter layer 12 is composed of one or any combination of honeycomb paper, filter cotton, wire mesh, sintered mesh, or perforated plate.
[0042] Specifically, the filter layer 12 can further improve the overall filtration efficiency of the filter module. The filter layer 12 is formed by attaching multiple layers of filter material sequentially onto the baffle plate 5. The attachment methods can include pasting, binding, pressing, welding, etc. Arranging the filtration levels from coarse to fine can provide lower air resistance, higher filtration efficiency, and paint capacity. The filter layer 12 and the baffle plate 5 are prefabricated as a whole, which simplifies the structure and facilitates assembly.
[0043] Further configuration: the baffle plate 5 is a baffle plate 5 made of cardboard or steel plate. The baffle plate 5 is a baffle plate 5 made by pulp molding or injection molding.
[0044] The principle of gas flow direction in this invention is as follows: Figure 4 As shown, gas carrying overspray paint mist flows in through the air inlet 3, first entering the first layer of baffle 5, and then passing through the ventilation holes 9 on the connecting surface 8 of the protrusion 6 and the recess 7 of the baffle 5 to enter the next layer of baffle 5. It undergoes deflection between the multiple layers of continuously arranged cavities 11, changing its direction of travel multiple times. Larger paint mist particles, due to inertia and centrifugal force, cannot change direction in time to pass through the cavities 11, and thus collide with and are captured by the baffle 5. As a preferred embodiment, a filter layer 12 is arranged on the last layer of baffle 5. This filter layer 12 captures and filters smaller paint mist particles. Its W-shaped reciprocating filter structure 2 provides a larger filtration area, and finally, clean airflow is discharged from the air outlet 4.
[0045] The paint mist filtration structure 2 of this utility model can significantly reduce the transportation space required during transport. For example... Figure 5 , 6 As shown, baffles 5 with the same specifications and integrated baffles 5 with filter layers 12 attached are stacked separately. The stacking method is that the protrusions 6 overlap with the protrusions 6 and the recesses 7 overlap with the recesses 7, which makes full use of the space occupied by the gas flow channel cavity 11 and saves about 60%-80% of the space.
[0046] This utility model provides an assembly method for a filter structure 2 used to process overspray paint mist. For example... Figure 7 As shown, firstly, according to the arrangement order of the baffles 5 in the filter structure 2, the stacked baffles 5 are arranged in the order of the first layer baffle stacking rack 14, the second layer baffle stacking rack 15... the Nth layer baffle stacking rack 16. Then, the baffles 5 of the corresponding layer are removed from the stacking rack in sequence and placed into the module housing 1. When stacking in the housing 1, the recessed part 7 of the upper layer baffle 5 is placed in contact with the protruding part 6 of the lower layer baffle 5 to form the support structure 10. This assembly method is simple and quick, saves time, and can form the support structure 10 and gas flow channel without complicated operations such as cardboard folding and interlacing. It is more conducive to realizing the automation and unmanned operation of the assembly process.
[0047] The working principle and beneficial effects of this utility model are as follows:
[0048] The paint mist filtration structure 2 employs W-shaped baffles 5 with raised and recessed structures, stacked layer by layer. The lower raised portion 6 contacts the upper recessed portion 7 to form a support structure 10, and the lower recessed portion 7 and the upper raised portion 6 form a cavity 11. Ventilation holes 9 are opened on the connecting surfaces 8 of the raised portion 6 and the recessed portion 7 to connect the various cavities 11, forming a baffle duct. Baffles 5 of the same specifications are stacked and packaged to save transportation space. During assembly, baffles 5 from different stacking racks are removed in sequence and stacked in the module housing 1.
[0049] The paint mist filter structure 2 consists of an integrated W-shaped baffle 5, which is simple in form and has few components, saving manufacturing costs and assembly time. The assembly method of the paint mist filter structure 2 only requires stacking the baffles 5 layer by layer, forming the support structure 10 and gas flow channel without complex operations, saving time and effort and making it easier to automate and unmanned the assembly process. During transportation, the W-shaped baffles 5 can be stacked, making full use of the space occupied by the gas flow channel cavity 11, saving transportation costs.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A filter structure for treating overspray paint mist, characterized in that include: The housing (1) and the filter structure (2) are located inside the housing (1). The housing (1) is provided with an air inlet (3) and an air outlet (4). The filter structure (2) is formed by stacking baffles (5).
2. The filter structure for handling overspray paint mist according to claim 1, characterized in that, include: One side of the housing (1) is an air inlet (3), and the other side of the housing (1) opposite to the air inlet (3) is an air outlet (4).
3. The filter structure for handling overspray paint mist according to claim 1, characterized in that, include: The baffle plate (5) is W-shaped.
4. The filter structure for handling overspray paint mist according to claim 3, characterized in that, include: The baffle (5) is composed of a protrusion (6), a recess (7) and a connecting surface (8). At least one of the protrusion (6) and the recess (7) is planar. A ventilation hole (9) is provided on the connecting surface (8).
5. The filter structure for handling overspray paint mist according to claim 4, characterized in that, include: The size of the ventilation hole (9) on the connecting surface (8) decreases sequentially from the air inlet (3) to the air outlet (4).
6. The filter structure for treating overspray paint mist according to claim 5, characterized in that include: A filter layer (12) is arranged on the baffle (5) closest to the air outlet (4) in the filter structure (2), forming a baffle (13) with an attached filter layer.
7. The filter structure for handling overspray paint mist according to claim 6, characterized in that, include: The filter material on the filter layer (12) is arranged in a filtration grade from coarse to fine along the airflow direction.
8. The filter structure for handling overspray paint mist according to claim 6, characterized in that, include: The filter layer (12) is a filter layer (12) composed of one or any combination of honeycomb paper, filter cotton, wire mesh, sintered mesh or porous plate.
9. The filter structure for handling overspray paint mist of claim 1, wherein, include: The baffle plate (5) is a baffle plate (5) made of cardboard or steel plate.
10. The filter structure for handling overspray paint mist of claim 1, wherein, include: The baffle plate (5) is a baffle plate (5) made by pulp molding or injection molding.